基于网络的PLC实验梯形图编辑器设计及实现

作者：张 扬，黄 琰，朱善安 日期：2008-04-17/span> 浏览：3357 查看PDF文档

基于网络的PLC实验梯形图编辑器设计及实现
张 扬，黄 琰，朱善安
（浙江大学 电气工程学院，浙江 杭州 310027）

摘 要：可编程逻辑控制器(PLC)在工业生产中应用广泛，基于网络的PLC实验系统作为基于物理设备的远程实验系统，其客户端必须提供梯形图编辑功能，同时，还需要将用户绘制的梯形图转换为语句表。在Visual C++中将梯形图抽象为有向图后进行了编辑器的设计，采用递归思想设计了梯形图到语句表的转换算法；并用程序实现了梯形图绘制以及向语句表转换的功能，为其他需要嵌入类似功能的系统提供了有效的设计思路。
关键词：可编程逻辑控制器；网络实验室；梯形图；语句表

Design and implementation of ladder diagram editor in PLC experiment based on Internet
ZHANG Yang, HUANG Yan, ZHU Shanan
（College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China）
Abstract: Programmable logic controller (PLC) is widely used in industry. PLC experiment system based on Internet is a remote experiment system using real physical equipments. The client of PLC experiment system has to offer a function to edit ladder diagram for users and convert it into instruction list. Developed with Visual C++,the editor was designed by abstracting ladder diagram to directed graph, and recursion was used to design the algorithm for converting ladder diagram into sentence list. The function for editing ladder diagram and converting it into sentence list has been implemented and can be effectively used in other systems.
Key words: programmable logic controller (PLC); Netlab; ladder diagram; instruction list

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